It's parked against traffic and at an awkward angle, as if its owner had been in a great hurry to get home.
"When he's not around, we don't feel like doing much," said Chris, 20, the couple's oldest child.
O'Neil, who serves in the 3rd Armored Cavalry Regiment, and tens of thousands of other U.S. soldiers departed in the spring for the war in Iraq. The separation has been hard on the families, who count their losses in the number of events they haven't been able to share - a baby's birth, a daughter's graduation, a wedding anniversary - and the interruption of the day-to-day business of being a family.
On top of those missed moments, the families of the 3rd Cavalry have more grave concerns. The 5,200-troop combat unit based at Fort Carson has lost a dozen soldiers in Iraq, many of them in ambushes in the dangerous "Sunni Triangle," west of Baghdad.
"For our family members, it's not in the back of their mind. It's in the front of their mind every day," said Lt. Col. Tom Budzyna, an Army spokesman at Fort Carson.
As of yesterday, 268 U.S. soldiers had been killed in Iraq, 130 of them on or after President Bush declared an end to major combat May 1, according to the military.
Lori O'Neil, Robert's wife, turns stonily silent when asked whether her husband has been involved in any close calls.
"I praise the Lord," she says simply. "It was only [God] that could have protected him."
Splintered families have had a particularly tough time dealing with separation because the government did not say at first how long the troops would remain overseas. The commander of U.S. forces said last week that all troops in Iraq should expect at least yearlong deployments.
Military personnel initially had been told to expect deployments from six months to a year, and many families had hoped for a swift homecoming. After the president's announcement in May, some believed that the hardest work was over and that the soldiers would soon return.
The families of the 3rd Cavalry went through another emotional upheaval a few weeks ago, when Sen. Ben Nighthorse Campbell, a Colorado Republican, mistakenly announced that the regiment would return in October. The error, which arose from a misunderstanding, was corrected the same day, Army officials said.
The unit will probably come home in the spring after serving out its year, officials said.
The incorrect report also spread to families of the 3rd Brigade Combat Team, another large unit from Fort Carson. Kristin Olexio, 36, wife of a major in the team's 4th Engineer Battalion, said she doesn't cry about much. But after having her emotions tugged in opposite directions by the senator's announcement and subsequent retraction, "I literally cried all night."
Olexio said she knew she might be separated from her husband for as long as 12 months, but it didn't sink in: "I did not prepare myself for the year. I didn't want to believe it. I couldn't think that far out."
Outside their modest wood-and-brick house near the heart of this town of 18,000 residents, yellow ribbons are tied around tree trunks and on the front yard's metal fence. A large American flag is displayed to the left of the front door, hung there by Jackie, the couple's 18-year-old daughter, on the night her father was deployed.